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Building Sundials

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12 Jul 2004 (Updated )

Create your own sundial with MATLAB.

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Description

If carefully built, a sundial is perfectly capable of keeping accurate time. The problem is that you need a different sundial for every combination of latitude, longitude, and day of the year. Fortunately MATLABĀ® can make this a manageable problem. By turning this procedure around, you can also use MATLAB to tell you which way is north.
 
The algorithms used here for MATLAB sundial creation were adapted from http://www.de-zonnewijzerkring.nl/eng/

MATLAB release MATLAB 7 (R14)
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Comments and Ratings (2)
27 Sep 2005 IDRIS ELLIS

why not just some simple trigonometry? After all, all of the original ALGORITHMS were in that formay: stuff having to put it into some programme which I do not have the machine for: the TI-81 is more than sufficent to the task, if one has the proper ALGORITHMS.

15 Mar 2005 martyn dorey

Fantastic. Would be good to include a vertical mounted sundial too.

Updates
19 Jun 2009

Updating copyright line.

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